How would you build a low 10’s street car

A Demon won't hold value if you are drag racing it. You will likely cook it within 20 runs.

I've run against a couple Hellcats with drag pack and little slicks with my low 10 sec '1974 N/A 451 Duster. When ambers flashed? Never saw them again.

My new nemesis is a kid and his dad with a '67 454 Chevelle. Dual quads hanging out. Twice he lined up in the next lane on a slow test and tune Sunday. And twice I won because of slight hole shot. That damn kid hung on my door the whole way. Slowly realing me in. Just ran out of track. I don't think he worries about "Demons" either?

OLD SCHOOL BABY!

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Your path to streetable tens certainly works. But consider what can be done with newer combos. The latest factory supercharged racecars run mid to low 8s, some in the sevens! And they are much more reliable than most cars as fast.
For a cheaper , reliable low ten second car, copying what they have done to some degree is the ticket. My guess is a 6.4 hemi with the right forged pistons and better rods will hold up at 750 hp supercharged. Trans? Maybe some clutch and converter upgrades? Most importantly don't try and set the car up for killer 60 fts. An extra .10 to .20 here can be a great parts saver, allowing a lot of fun before breakage.